元素 | 含量范围(ppm) | 中位数 | 平均值 ± 标准差 | 变异系数 | 土壤背景值 | 超出率* |
Cu | 34.38~12122.19 | 284.625 | 1570.32 ± 3471.34 | 2.21 | 24.9 | 100 |
Pb | 19.46~903.86 | 46.475 | 156.01 ± 275.90 | 1.77 | 25.9 | 93.75 |
Zn | 59.64~1757.50 | 175.725 | 321.3 ± 413.88 | 1.29 | 53.2 | 100 |
Ni | 8.80~68.48 | 36.88 | 37.08 ± 17.80 | 0.48 | 25 | 68.75 |
Mn | 533.53~3499.85 | 1409.08 | 1461.96 ± 798.61 | 0.55 | 525.2 | 100 |
U | 2.37~4.22 | 3.535 | 3.42 ± 0.47 | 0.14 | 2.15 | 100 |
Cd | 0.37~3.95 | 0.865 | 1.43 ± 1.17 | 0.82 | 0.104 | 100 |
Cr | 16.29~126.80 | 55.62 | 57.73 ± 29.65 | 0.51 | 69.4 | 37.5 |